#include<bits/stdc++.h>
using namespace std;
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()
const int N=2e5+10;
#define INF 0x3f3f3f3f;
typedef long long int ll;
#define close(); std::ios::sync_with_stdio(false);cin.tie(0),cout.tie(0);
//----------------------------------------------------------------------------//

void solve()
{
	int a=0,b=0,c=0;
	string s;
	cin>>s;
	for(auto k:s)
	{
		if(k=='A') a++;
		else if(k=='B') b++;
		else if(k=='C') c++;
	}
	if(a+c==b) cout<<"YES"<<'\n';
	else cout<<"NO"<<'\n'; 
	


}

int main()
{
	close();
	int T; cin>>T;
	while (T--) solve();
	return 0;
}

